Common Tern has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| David Gregg | Block Island Ferry | New Shoreham | Washington | 24-Aug-2021 |
| Wayne Munns | Snappa In-shore Pelagic | Pelagic | Offshore | 14-Jun-2021 |
| John Magill | Ninigret Mud Flats | Charlestown | Washington | 10-Jun-2021 |
| Jen Leitao | Quonnie Breachway | Charlestown | Washington | 09-Jun-2021 |
| Jess Bishop | Quonnie | Charlestown | Washington | 06-Jun-2021 |
| Paul L'Etoile | Ninigret Pond | Charlestown | Washington | 28-May-2021 |
| Jan St.Jean | Succotash marsh | South Kingstown | Washington | 19-May-2021 |
| Dianne Auld | Napatree Point | Westerly | Washington | 19-May-2021 |
| Don Heitzmann | Succotash Marsh | South Kingstown | Washington | 12-May-2021 |
| Barbara Sherman | Narragansett Town Beach | Narragansett | Washington | 11-May-2021 |
| Dick & Marge Bradley | Mount Hope Farm | Bristol | Bristol | 11-May-2021 |
| Sue Palmer | Trustom NWR | South Kingstown | Washington | 09-May-2021 |
| John Bean | Jerusalem sweet spot | South Kingstown | Washington | 06-May-2021 |
| Carlos Pedro | Charlestown Breakaway Tidal Flats | Charlestown | Washington | 03-May-2021 |